def a():
    x = int(input("请输入x:"))
    y = int(input("请输入y:"))
    info = ""
    if x == 0 and y == 0:
        info = "原点"
    elif x == 0:
        info = "x轴"
    elif y == 0:
        info = "y轴"
    elif x < 0 and y > 0:
        info = "第二象限"
    elif x < 0 and y < 0:
        info = "第三象限"
    elif x > 0 and y < 0:
        info = "第四象限"
    else:
        info = "第一象限"
    print(f"位于{info}")

def Year():
    year = int(input("请输入年份:"))

    info = ""
    if year % 400 == 0:
        info = "是闰年"
    else:
        if year % 4 == 0:
            info = "不是闰年"
        else:
            if year % 100 == 0:
                info = "不是闰年"
            else:
                info = "是闰年"
    print(f"{year}{info}")




if __name__ == "__main__":
    Year()
